Opinion polling for the 2015 United Kingdom general election

Opinion polling for the 2015 United Kingdom general election was carried out by various organisations carried out opinion polling to gauge voting intention. Most of the polling companies listed are members of the British Polling Council (BPC) and abide by its disclosure rules. The opinion polls listed range from the previous election on 6 May 2010 to the election on 7 May 2015.

In the event, the actual results proved markedly different from those indicated by the opinion polls in the final weeks, and even last few days, of the campaign. Although an extremely tight race between Labour and the Conservatives was expected, the actual results showed a stronger-than-expected performance from the Conservatives, with Labour producing lower figures than expected.

Graphical summary

Guide to tables Poll results are listed in the tables below in reverse chronological order. The highest percentage figure in each poll is displayed in bold, and its background is shaded in the leading party's colour. The "lead" column shows the percentage point difference between the two parties with the highest figures. When a poll result is a tie, the figures with the highest percentages are shaded and displayed in bold.

"Green" in these tables refers to combined totals for the green parties in the United Kingdom, namely the Green Party of England and Wales, the Scottish Greens, and, for polls of the entire UK rather than just Great Britain, the Green Party Northern Ireland. The three parties share a commitment to environmental policies, but are independent of one another, with each contesting elections only in its own region.

National poll results Most national opinion polls do not cover Northern Ireland, which has different major political parties from the rest of the United Kingdom. This distinction is made in the tables below in the area column, where "GB" means Great Britain (England, Scotland and Wales), and "UK" means the entire United Kingdom. Plaid Cymru only stand candidates in Wales and the Scottish National Party (SNP) only stand candidates in Scotland.

2015